“三人行,必有我师焉,择其善者而从之,其不善者而改之。”这句话说明( )
—What’s the weather like today? —The radio says it’s .
—How is it going? — . I’m sick(生病的) today.
—Who’s in the room? — Mr. Brown is. He a letter now.
Why not to the park this weekend?
It is raining, so I stay at home.